From: Scott M Vermillion (scott_ccie_list@it-ag.com)
Date: Fri Oct 24 2008 - 15:29:11 ARST
Actually, Marko's blog explains the issue beautifully. I thought for a
second there he was going to show us how to decode what the misconfigured
router is expecting to see for an AS, but alas the situation remains as it
ever was. :-(
I think it's safe to assume we won't ever be asked to accomplish the
impossible. If our L3 drawing and our task language tells us to configure a
given topology, it would be absurdly unfair to then have a misconfiguration
in place where we have no access/insight. Perhaps the fact that this cannot
be somehow inferred from debug and/or error messages was the whole point of
the lesson? Or perhaps the local-as thing was the point of the lesson? Not
entirely clear without knowing the entire lab scenario.
From: nouman abbasi [mailto:abbasi.nouman@gmail.com]
Sent: Friday, October 24, 2008 11:13 AM
To: Scott M Vermillion
Cc: Cisco certification
Subject: Re: BGP Error
Thanks Scott.
But in the LAB Exam ; we dont have access to the BackBone ; how to overcome
in such scenario.
Sorry to say but proctor behaves wierd sometimes.
I remember a comment from a proctor to my friend
Comment => "The question is in plain English ; dont ask such question"
On Fri, Oct 24, 2008 at 7:44 PM, Scott M Vermillion
<scott_ccie_list@it-ag.com> wrote:
The "BGP-3-NOTIFICATION" is telling you what the problem is (peer in wrong
AS). Recall that when you do confederation, your AS as seen by the outside
world is what you configure as your 'bgp confederation identifier nnn'; the
'router bgp nnn' command is where you specify your sub-as.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
nouman abbasi
Sent: Friday, October 24, 2008 10:28 AM
To: Cisco certification
Subject: BGP Error
Hello,
Need input on BGP Issue
I m able to ping from BB1 to R6 and vice-versa but bgp doesnt comes up....
<< Error >>
*Mar 1 08:37:53.965: %BGP-3-NOTIFICATION: sent to neighbor 150.1.2.1 2/2
(peer in wrong AS) 2 bytes 0004
--More-- FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF 002D 0104 0004 00B4 0606
0606 1002 0601 0400 0100 0102 0280 0002 0202 00
<<BB1>>
interface FastEthernet0
ip address 150.1.2.254 255.255.255.0
router bgp 254
no synchronization
bgp log-neighbor-changes
network 150.1.2.0
neighbor 150.1.2.1 remote-as 64514
<<R6>>
router bgp 64514
no synchronization
bgp router-id 6.6.6.6
bgp log-neighbor-changes
bgp confederation identifier 4
bgp confederation peers 64513
neighbor 2.2.2.2 remote-as 64513
neighbor 2.2.2.2 ebgp-multihop 5
neighbor 2.2.2.2 update-source Loopback0
neighbor 150.1.2.254 remote-as 254
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